submodule: bump openthread from 4459c54 to bb5e9b7
#2067
| Job | Run time |
|---|---|
| 1s | |
| 2m 54s | |
| 7m 56s | |
| 8m 6s | |
| 0s | |
| 18m 57s |
4459c54 to bb5e9b7
#2067
| Job | Run time |
|---|---|
| 1s | |
| 2m 54s | |
| 7m 56s | |
| 8m 6s | |
| 0s | |
| 18m 57s |